Vertical and Lateral Forces Applied to the Bar during the Bench Press in Novice Lifters

Duffey, Michael J.; Challis, John H.

doi:10.1519/jsc.0b013e3182281939

Cited by 14 publications

(18 citation statements)

References 6 publications

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“…For the DBP, the lower 10RM load might be associated to the greater stability requirements that decreases the net torque and the ability to lift the weight. 6 In the current study, there were no significant differences in the repetitions per set, training volume and total work, between bench press modes. Our results were in contrast with the Augustsson et al 17 who observed a decrease in muscle electrical activity and a decrease in repetition performance when a multijoint exercise (leg press) was preceded by a single-joint exercise (leg extension).…”

Section: Discussioncontrasting

confidence: 50%

“…Despite similar kinematics, each bench press modality may promote distinct myoelectric responses. 3 Bench press using barbell promotes lateral forces directed toward the ends of the barbell that equals approximately 25% of the vertical force, independent of the load intensity 6 . Lateral forces on the barbell promote activity in the triceps brachii.…”

Section: Introductionmentioning

confidence: 99%

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Effect of pre-fatiguing the triceps brachii on subsequent strength performance and myoelectric activity in the barbell, dumbbell and Smith machine bench press

Farias¹,

Paz²,

Vigário³

et al. 2019

Rev And Med Dep

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Objective: The purpose of this study was to examine the effect of pre-fatiguing the triceps brachii on subsequent strength performance and myoelectric activity in the barbell, dumbbell, and Smith machine bench press. Method: Nineteen trained men participated of this study (27.9 ± 4.5 years; 1.72 ± 0.1 m; 80.3 ± 9.2 kg). Ten-repetition maximum loads were determined for the triceps extension as well as the barbell barbell, dumbbell and Smith machine bench press. Three experimental protocols were performed in a randomized design. All experimental protocols began with four sets of the triceps extension (performed with a high pulley) to repetition failure followed by four sets to repetition failure for one of three bench press modalities. Two minute-rest intervals were adopted between sets and exercises. Total repetitions (work), training volume and myoelectric activity of pectoralis major, anterior deltoid, biceps brachii, and triceps brachii were recorded during each bench press modality. Results: Significantly greater activity of the biceps brachii was observed during performance of the dumbbell bench press versus barbell and Smith machine bench press. No other significant differences were observed between protocols. Conclusion: Therefore, considering the training volume and myoelectric activity of the synergistic muscles, similar performance across bench press modalities can be expected when preceded by performance of a triceps extension.

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Section: Discussioncontrasting

confidence: 50%

Section: Introductionmentioning

confidence: 99%

Effect of pre-fatiguing the triceps brachii on subsequent strength performance and myoelectric activity in the barbell, dumbbell and Smith machine bench press

Farias¹,

Paz²,

Vigário³

et al. 2019

Rev And Med Dep

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show abstract

“…The greater moment arm on the elbow will logically create a higher degree of lateral forces and a lesser amount of the total forces produced put vertically on the barbell. Duffey and Challis (2011) found in novice lifters that the lateral force production in a bench press was between 22% and 29% of the vertical force produced. When relating this to the present study, we see that if the total force production is the same in all three grip widths throughout the lift, the differences in moment arms will cause the vertical forces to be different because of a greater lateral force.…”

Section: Discussionmentioning

confidence: 98%

“…Furthermore, by including the lateral forces as measured in the study of Duffey and Challis (2011), the direction of the total force production can be measured, which can show during the lift if this total force direction goes laterally, medially or directly through the elbow joint ( Figure 6). These differences in direction of total Figure 6.…”

Section: Discussionmentioning

confidence: 99%

The effects of grip width on sticking region in bench press

Gomo¹,

Tillaar²

2015

Journal of Sports Sciences

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The aim of this study was to examine the occurrence of the sticking region by examining how three different grip widths affect the sticking region in powerlifters' bench press performance. It was hypothesised that the sticking region would occur at the same joint angle of the elbow and shoulder independent of grip width, indicating a poor mechanical region for vertical force production at these joint angles. Twelve male experienced powerlifters (age 27.7 ± 8.8 years, mass 91.9 ± 15.4 kg) were tested in one repetition maximum (1-RM) bench press with a narrow, medium and wide grip. Joint kinematics, timing, bar position and velocity were measured with a 3D motion capture system. All participants showed a clear sticking region with all three grip widths, but this sticking region was not found to occur at the same joint angles in all three grip widths, thereby rejecting the hypothesis that the sticking region would occur at the same joint angle of the elbow and shoulder independent of grip width. It is suggested that, due to the differences in moment arm of the barbell about the elbow joint in the sticking region, there still might be a poor mechanical region for total force production that is joint angle-specific.

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“…Using asymmetric loads, lateral forces had to be generated to compensate for the disruptive momentum caused by the de-loaded side. Triceps brachii can generate lateral forces with the bench press (Duffey and Challis 2011 ). The lower triceps brachii activation on the loaded side, contrasting with the similar activation across the conditions on the de-loaded side, was most likely an attempt to maintain a centered barbell.…”

Section: Discussionmentioning

confidence: 99%

Muscle activity in asymmetric bench press among resistance-trained individuals

et al. 2020

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Purpose To determine the effects of asymmetric loads on muscle activity with the bench press. Method Seventeen resistance-trained men performed one familiarization session including testing one repetition maximum (1RM) and three 5 repetition maximum (RM) lifts; using symmetric loads, 5% asymmetric loads, and 10% asymmetric loads. The asymmetric loading (i.e., reduced load on one side) was calculated as 5% and 10% of the subject`s 1RM load. In the experimental session, the three conditions of 5RM were conducted with electromyographic activity from the pectoralis major, triceps brachii, biceps brachii, anterior deltoid, posterior deltoid, and external oblique on both sides of the body. Results On the loaded side, asymmetric loads reduced triceps brachii activation compared to symmetric loads, whereas the other muscles demonstrated similar muscle activity between the three conditions. On the de-loaded side, 10% asymmetry in loading resulted in lower pectoralis major, anterior deltoid, and biceps brachii activation compared to 5% asymmetric and symmetric loading. On the de-loaded side, only pectoralis major demonstrated lower muscle activation than symmetric loads. Furthermore, asymmetric loads increased external oblique activation on both sides compared to symmetric loads. Conclusions Asymmetric bench press loads reduced chest and shoulder muscle activity on the de-loaded side while maintaining the muscle activity for the loaded side. The authors recommend resistance-trained participants struggling with strength imbalances between sides, or activities require asymmetric force generation (i.e., alpine skiing or martial arts), to implement asymmetric training as a supplement to the traditional resistance training.

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Vertical and Lateral Forces Applied to the Bar during the Bench Press in Novice Lifters

Cited by 14 publications

References 6 publications

Effect of pre-fatiguing the triceps brachii on subsequent strength performance and myoelectric activity in the barbell, dumbbell and Smith machine bench press

Effect of pre-fatiguing the triceps brachii on subsequent strength performance and myoelectric activity in the barbell, dumbbell and Smith machine bench press

The effects of grip width on sticking region in bench press

Muscle activity in asymmetric bench press among resistance-trained individuals

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